From 52dbb57cace252ec0be873ca44706e3b9b56e79e Mon Sep 17 00:00:00 2001
From: Jan Horak <jhorak@redhat.com>
Date: Tue, 23 Jan 2024 10:33:39 +0100
Subject: [PATCH] Added SchemeSupported to the OpenURI portal

---
 data/org.freedesktop.portal.OpenURI.xml | 14 ++++++++++++++
 src/open-uri.c                          | 25 ++++++++++++++++++++++++-
 tests/test-portals.c                    |  2 +-
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/data/org.freedesktop.portal.OpenURI.xml b/data/org.freedesktop.portal.OpenURI.xml
index 67f99f269..d76874442 100644
--- a/data/org.freedesktop.portal.OpenURI.xml
+++ b/data/org.freedesktop.portal.OpenURI.xml
@@ -161,6 +161,20 @@
       <arg type="o" name="handle" direction="out"/>
     </method>
 
+    <!--
+        SchemeSupported:
+        @scheme: The URI protocol scheme to check
+        @supported: True when URI scheme is supported on the host system
+
+        Asks whenever host system supports the protocol scheme.
+
+        The SchemeSupported method was introduced in version 4 of the OpenURI portal API.
+    -->
+    <method name="SchemeSupported">
+      <arg type="s" name="scheme" direction="in"/>
+      <arg type="b" name="supported" direction="out"/>
+    </method>
+
     <property name="version" type="u" access="read"/>
   </interface>
 </node>
diff --git a/src/open-uri.c b/src/open-uri.c
index 47b789cbb..0587e79cd 100644
--- a/src/open-uri.c
+++ b/src/open-uri.c
@@ -919,6 +919,28 @@ handle_open_in_thread_func (GTask *task,
                                                      g_object_ref (request));
 }
 
+static gboolean
+handle_scheme_supported (XdpDbusOpenURI *object,
+                         GDBusMethodInvocation *invocation,
+                         const gchar *arg_scheme)
+{
+  if (arg_scheme == NULL || *arg_scheme == '\0')
+    {
+      g_dbus_method_invocation_return_error (invocation,
+                                             XDG_DESKTOP_PORTAL_ERROR,
+                                             XDG_DESKTOP_PORTAL_ERROR_INVALID_ARGUMENT,
+                                             "Scheme not specified");
+      return G_DBUS_METHOD_INVOCATION_HANDLED;
+    }
+
+  g_autoptr(GAppInfo) app_info = g_app_info_get_default_for_uri_scheme (arg_scheme);
+
+  g_debug ("Handler for scheme: %s%s found.", arg_scheme, app_info ? "" : " not");
+  g_dbus_method_invocation_return_value (invocation, g_variant_new ("(b)", app_info != NULL));
+
+  return G_DBUS_METHOD_INVOCATION_HANDLED;
+}
+
 static gboolean
 handle_open_uri (XdpDbusOpenURI *object,
                  GDBusMethodInvocation *invocation,
@@ -1088,12 +1110,13 @@ open_uri_iface_init (XdpDbusOpenURIIface *iface)
   iface->handle_open_uri = handle_open_uri;
   iface->handle_open_file = handle_open_file;
   iface->handle_open_directory = handle_open_directory;
+  iface->handle_scheme_supported = handle_scheme_supported;
 }
 
 static void
 open_uri_init (OpenURI *openuri)
 {
-  xdp_dbus_open_uri_set_version (XDP_DBUS_OPEN_URI (openuri), 3);
+  xdp_dbus_open_uri_set_version (XDP_DBUS_OPEN_URI (openuri), 4);
 }
 
 static void
diff --git a/tests/test-portals.c b/tests/test-portals.c
index 7b59064f7..e9e5e5a57 100644
--- a/tests/test-portals.c
+++ b/tests/test-portals.c
@@ -444,7 +444,7 @@ DEFINE_TEST_EXISTS(inhibit, INHIBIT, 3)
 DEFINE_TEST_EXISTS(location, LOCATION, 1)
 DEFINE_TEST_EXISTS(network_monitor, NETWORK_MONITOR, 3)
 DEFINE_TEST_EXISTS(notification, NOTIFICATION, 1)
-DEFINE_TEST_EXISTS(open_uri, OPEN_URI, 3)
+DEFINE_TEST_EXISTS(open_uri, OPEN_URI, 4)
 DEFINE_TEST_EXISTS(print, PRINT, 2)
 DEFINE_TEST_EXISTS(proxy_resolver, PROXY_RESOLVER, 1)
 DEFINE_TEST_EXISTS(screenshot, SCREENSHOT, 2)